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Image size options from tellyworth. fixes #5933

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git-svn-id: https://develop.svn.wordpress.org/trunk@6952 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Ryan Boren
2008-02-21 06:00:15 +00:00
parent a7e9b93bab
commit 6aacdf4c91
6 changed files with 161 additions and 37 deletions
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31
wp-admin/includes/image.php
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@@ -224,16 +224,27 @@ function get_udims( $width, $height) {
*
*/
function wp_shrink_dimensions( $width, $height, $wmax = 128, $hmax = 96 ) {
if ( $height <= $hmax && $width <= $wmax ){
//Image is smaller than max
return array( $width, $height);
} elseif ( $width / $height > $wmax / $hmax ) {
//Image Width will be greatest
return array( $wmax, (int) ($height / $width * $wmax ));
} else {
//Image Height will be greatest
return array( (int) ($width / $height * $hmax ), $hmax );
}
return wp_constrain_dimensions( $width, $height, $wmax, $hmax );
}
// same as wp_shrink_dimensions, except the max parameters are optional.
// if either width or height are empty, no constraint is applied on that dimension.
function wp_constrain_dimensions( $current_width, $current_height, $max_width=0, $max_height=0 ) {
if ( !$max_width and !$max_height )
return array( $current_width, $current_height );
$width_ratio = $height_ratio = 1.0;
if ( $max_width > 0 && $current_width > $max_width )
$width_ratio = $max_width / $current_width;
if ( $max_height > 0 && $current_height > $max_height )
$height_ratio = $max_height / $current_height;
// the smaller ratio is the one we need to fit it to the constraining box
$ratio = min( $width_ratio, $height_ratio );
return array( intval($current_width * $ratio), intval($current_height * $ratio) );
}
// convert a fraction string to a decimal